Now in the plastic market, all kinds of mechanical arm products are available.Unlike other devices, manipulators are not easy to classify and evaluate: different shafts, itineraries, inconsistent specifications, and limited industry standards make comparisons difficult.
There are some guidelines that potential buyers can use to make an informed decision.To effectively compare different things, start with the basics;By knowing the basics, you'll be able to make an informed choice when choosing a manipulator.
How long is the cross - walk manipulator?
The distance the manipulator travels is known as the stroke, and its size is related to the size of the parts, the descent position and the shape of the machine.For simplicity, this distance is usually defined along three axes: in this article we will use X, Y, and Z triples.Note that not all manipulator manufacturers define the stroke in this way.Some define axes differently, while others adopt different naming conventions.
The X axis.This distance is generally called the drawing stroke, and its size depends on the thickness of the component.For example, in order to operate a bucket, to reach out the manipulator and pull the bucket out of the mold, you need enough travel.
The Y axis.Also known as transverse travel, the amount of travel to and from the machine depends on whether the manipulator is putting the parts down on the side or the back of the machine.The parts that make use of this travel are just to skip the machine.
The Z axis.This distance, defined as a vertical stroke, is determined by the height of the machine and the required descent height; that is, the manipulator must be high enough for the part to skip the machine, and low enough to lower the part at a reasonable height above the ground.
The easiest way to determine the amount of travel required is to draw a layout.The layout not only identifies each stroke, but also identifies important items on the plan, such as auxiliary equipment, support columns, and voids.
How many items does the manipulator handle?
The payload is the weight that the manipulator can handle and is defined as follows:
Payload = component weight + arm tool weight
The weight of a part is often known for a particular purpose;However, the arm-end tool is not.The weight of the arm tool can be estimated and obtained from the supplier.
Torque is more important than payload.Torque is defined as a force around an axis to form a torsion and rotation trend, is a function of the payload and the distance to the pivot point of the manipulator.To ensure that the manipulator can operate components, it is necessary to compare the actual torque and the available torque that the manipulator can support.
Features that contribute to user-friendly operation include a control panel with a graphical user interface, an intuitive touch screen, and a suspension button stand.With a handheld console, the operator can choose to program the manipulator or use the system's main control board mounted on the machine.
The type of control system in place also affects availability.The manipulator controller integrated with the injection molding machine controller enjoys more convenient common display screen and the ordinary manipulator controller with the least communication interruption.Other features include preprogramming templates that simplify programming for robots, and remote diagnostic capabilities that allow the molding industry to contact the online service engineer directly.
Look for digital components at the top, such as computer controllers with servo motors and digital drives.As with any mechanism, components will fail at some point, so check the expiration date of the manipulator.The shelf life length of different manipulator is different.When evaluating a shelf life, consider a range of wear items: belts, sleeves, filters, switches, sensors, cylinders, and so on.So a three-year strategy may not necessarily be better than a one-year strategy.
Vertical injection molding machine manipulator
Manipulator belongs to ANSI B151.27-1994 standard, which governs manipulator of horizontal injection molding machine and is a sub-standard of general industrial standard ANSI/RIA R15.06-1999.
From a security perspective, there are plenty of concerns.They include limitations on manipulator workspace, installation of mechanical limit devices, safety protection for vertical descent, and use of three-position switches.
Make sure the manipulator meets all practical safety specifications.
The capital cost of the manipulator is as important as the financial impact of the manipulator on the whole system.The savings associated with reduced downtime or faster cycle times can be real.Based on industrial realities, for example, a factory with a production hour of 6000 hours can achieve significant savings:
The mechanical downtime of the 1800 ton injection molding machine will be reduced by 1%, saving the molding industry up to RMB 50,000 per year.
The 200 ton injection molding machine with cycle time of 10 seconds will save RMB 80,000 per year by reducing 0.5 seconds.
For some jobs, the cost of buying a manipulator may be justified.Studying the long-term effects of different manipulators is well worth the effort.
Finally, when purchasing decisions are made, consider the manipulator as an element of the entire injection molding system.The performance, reliability, safety and cost of the manipulator play an important role in the operation of the whole system.The manipulator you choose should meet the purpose of your system.